Basically a vent art ...Here you can watch the wip / process :
http://blackdragon07.tumblr.com/post/128345102193/tu-es-la-lanterne-qui-%C3%A9claire-mes-t%C3%A9n%C3%A8bres

Color Pencil + Black pen
20/08/2015

Art by BlackDragon07
(C) The Flash and Green Lantern belong to DC Comics.

Nb: I put the mature filter on moderate (+ 13) because of the blood (I'm not sure about Weasyl 's policy towards this, so in doubt ... xD)